Bug#646957: "mount -o remount,rw" has no effect with kFreeBSD 9.0

[Robert Millan <rmh@debian.org>]

Package: busybox
Version: 1:1.17.1-8
Severity: normal
Tags: d-i
User: debian-bsd@lists.debian.org
Usertags: kfreebsd

When running on kFreeBSD 9.0, "mount -o remount,rw" no longer remounts the
target file system in writable mode.

This will break D-I in the future when kfreebsd-kernel-di-* is upgraded to 9.x.

To reproduce:

$ sudo mdconfig -a -t malloc -s 32m
md0

$ sudo mkfs.ufs /dev/md0
/dev/md0: 32.0MB (65536 sectors) block size 16384, fragment size 2048
[...]

$ sudo busybox mount -o ro -t ufs /dev/md0 /mnt

$ mount | grep /mnt
/dev/md0 on /mnt (ufs, local, read-only)

$ sudo busybox mount -o remount,rw -t ufs /dev/md0 /mnt

$ mount | grep /mnt
/dev/md0 on /mnt (ufs, local, read-only)

-- System Information:
Debian Release: 6.0.3
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: kfreebsd-amd64 (x86_64)

Kernel: kFreeBSD 8.1-1-amd64
Locale: LANG=ca_AD.UTF-8, LC_CTYPE=ca_AD.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages busybox depends on:
ii  libc0.1                       2.11.2-10  Embedded GNU C Library: Shared lib

busybox recommends no packages.

busybox suggests no packages.

-- no debconf information